KeyValuePairComparator.java |
1 /** 2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved. 3 * 4 * 5 * 6 * 7 * The contents of this file are subject to the terms of the Liferay Enterprise 8 * Subscription License ("License"). You may not use this file except in 9 * compliance with the License. You can obtain a copy of the License by 10 * contacting Liferay, Inc. See the License for the specific language governing 11 * permissions and limitations under the License, including but not limited to 12 * distribution rights of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 * SOFTWARE. 21 */ 22 23 package com.liferay.portal.kernel.util; 24 25 import java.util.Comparator; 26 27 /** 28 * <a href="KeyValuePairComparator.java.html"><b><i>View Source</i></b></a> 29 * 30 * @author Brian Wing Shun Chan 31 */ 32 public class KeyValuePairComparator implements Comparator<KeyValuePair> { 33 34 public KeyValuePairComparator() { 35 this(true); 36 } 37 38 public KeyValuePairComparator(boolean asc) { 39 this(true, asc); 40 } 41 42 public KeyValuePairComparator(boolean byKey, boolean asc) { 43 _byKey = byKey; 44 _asc = asc; 45 } 46 47 public int compare(KeyValuePair kvp1, KeyValuePair kvp2) { 48 if (_byKey) { 49 String key1 = kvp1.getKey(); 50 String key2 = kvp2.getKey(); 51 52 if (_asc) { 53 return key1.compareTo(key2); 54 } 55 else { 56 return -(key1.compareTo(key2)); 57 } 58 } 59 else { 60 String value1 = kvp1.getValue(); 61 String value2 = kvp2.getValue(); 62 63 if (_asc) { 64 return value1.compareTo(value2); 65 } 66 else { 67 return -(value1.compareTo(value2)); 68 } 69 } 70 } 71 72 private boolean _byKey; 73 private boolean _asc; 74 75 }